Formulas for Binary Compounds

Front

What is a binary compound?

Back

A binary compound is a chemical compound that consists of exactly two different elements.

Front

What is the charge of an atom that has lost one electron?

Back

+1

Front

Which element forms an ion with a 2- charge?

Back

Selenium (Se) forms an ion with a 2- charge.

Front

How do aluminum (Al) and oxygen (O) bond together?

Back

They form aluminum oxide (Al₂O₃).

Front

What charge does a calcium (Ca) ion have?

Back

+2

Front

How many valence electrons does a bromine atom have?

Back

Bromine has 7 valence electrons.

Front

What is the octet rule?

Back

The octet rule states that atoms tend to bond in such a way that they have eight electrons in their valence shell, achieving a stable electron configuration.

Front

What is an ion?

Back

An ion is an atom or molecule that has a net electrical charge due to the loss or gain of one or more electrons.

Front

What is the formula for sodium chloride?

Back

The formula for sodium chloride is NaCl.

Front

What is the significance of subscripts in chemical formulas?

Back

Subscripts indicate the number of atoms of each element in a compound.